Apparatus for extracting fat



Dec.2,1924. 'I l "1,517,763 B.cfsTELL ET AL f APPARATS FOR EXTRAGTING FAT Fileduuly 19, 1925 am f Patented Dec. 2, 1924.

j UNITED STATES ,PATENT oFFicE.-

BERNARD C. STELL Alfil) JAMES SPRING, 0F NOFOLK, VIRGINIA.

APPARATUS FOR EXTRACTING FAT.

Application ledJu1y 19, 1983. Serial No. 652,608.

Which the following is a specification.

This invention relates to. apparatus for extracting fats and drying residue's after extraction of fats.

An object of the invention is to provide an improved method'of extracting fats from fatty materials. e'

A further object is the provision of i m proved means for separat'in'gmhe solvent from the fat.l

A further 'object is the provision ofjim# proved heating means for drying the resimunicates with a pipe 34 connected to due from which the fat has been extracted for use as a fertilizer or fd.

.In the accompanying drawings, we have shown one embodiment of the invention. In this showing:-

Figure 1 is a Vertical 'sectional view of an extracting tank in which the fat is extracted from the fatty material, and,

Figure 2 is an end elevation of a portion of the tank showing the drive means.

Referring to the drawings, the extractor consists of an outer shell 28 having suitable manholes 29 arranged therein by means of which the raw material may be delivered thereto. The solvent is delivered to the interior of the extractor by means of a pipe 30 having a control valve 31. This pipe extends through a substantially large. sta- 'tionary pipe 32, arranged centrally of the extractor. The pipe32 is provided with a central opening 33 for the admission of solvent vapor and one endof this pipe coma suitable condenser (not shown). As shown, suitable packing glands 35 are ar ranged at the ends of the shell where the pipe 32 passes through the shell. Heatin elements 36 are arranged in the shell an these heating elements are adapted to be connected to a source of current by means of a ring 37 arranged on the shell and a brush 38 contacting therewith. As shown, the ring is connected to the heating elements by connections 37. The extractor is provided withl a draw-0E pipe 39 having a suitable control valve-40. Means are provided for rotating the extractor, consisting lof a ring gear 4l mounted on one end ofl the extractor shell and l meshing with a pinion -42 on a shaft 43.` This shaft is mounted in suitable bearings 44 and is ro- .f

vided-with -a gear 45- on .one end, mes ing with a pinion 46 on the shaft of a motor 47. The vextractor rides on suitable tracks 48 arrangedyateach end thereof and may be driven at any desired speed by means o the motor 47 In operation, the raw materialy is placed inside of extractor in a drystate throu h the manhole openings 29. The manho es are then closed and-the solvent is pumped 4in through the pipe 30 from a suitablev storage tank. When suliicient solvent has been delivered to the extractor, the'valve 31 is closed. The extractor isthen rotated, causing the raw material and the solvent to become thoroughly mixed, the .solvent collecting and extracting the fat contained in the raw material. Any solvent'v'aporized passes out through the opening 33 in the pipe 32 and thence through the pipe 34 to a condenser. After the fat has been ex' tracted forming a solution in the solvent,-

this solution is then pumped oli" throu h the outlet pipe 39 to a settling tank. T e raw material or residue remaining in the extractor is then subjected to heat by the heating elements 36 and the temperature is raised to a temperature of substantially 800 F. This vaporizes all solvents left in the material vvhlch are collected through the pipes 32 and 34. When the residue is thoroughly dry, it is hemoved through the manho e openings 29 'and may be used for feed or fertilizer, depending upon the material from which the fat is extracted.

, By employing the electric heatin elements 36 in the extractor, it is possi le to heat the material to a temperature of 800 F. or more, which is materially greater than the highest temperature' that can possibly The use of electric heating eleis to be taken as a preferred example of.

the same, and that various changes in the shape, size, and arrangementvof parts may be resorted to without departing from the.

j spirit. of. the invention or the scope of the snbblned claims.

avingthns described our invention, We claim:v 7' j 5 n extractor' comprising a shell, means for rotating said a stationary pipe arranged centrally opffsaidfshell and proecting beyond the ends thereof, said pipe n eing provided with amelongated openin 10.witlnn the shell, and a feed pipe .arranged "nvithin said stationarypipe and. having an 'open inner endprojecting from said eloni `An extractor Comprising a shelhmeans 15 for. rotating said shell, packing glands arrangedin The end walls ol" said shell, a

eosed pipe extending through said glands .saidl extractor, said plpe being provided with an opening within natures. in presence said shell. an outlet pipe Uonneeted to said 20 pipe exterior-ly said shell, and a feed pipe arranged within lsaid pipe and having an open inner ond projectingr from said opening.

J. A4 device eonstrnct'ed in accordance 25 with elaim l whereinelet-tri(1 heating elements are arranged in said shell and said shell is proyided with a eonduetor ring connected lo said heating` elements, and a brush adapted to Contact' with said ring 3U when the .shell is rotated.

In testimonyl whereof.` we atlix our sigof two witnesses.

BERNARD STELL. .TME M. SPHTNG. Witnesses T. L. Wnsi. (Him: ruin. 

